The first Jovian moons were discovered by
A) Galileo
B) Tycho
C) Huygens
D) Cassini
A
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The magnitude scale
a. originated just after the telescope was invented. b. can be used to indicate the apparent intensity of a celestial object. c. was devised by Galileo. d. is no longer used today. e. was used to determine the rate of precession.
Projectile Motion: A girl throws a rock horizontally, with a velocity of 10 m/s, from a bridge. It falls 20 m to the water below. How far does the rock travel horizontally before striking the water, assuming negligible air resistance?
A. 14 m B. 16 m C. 20 m D. 24 m
What is the ionosphere?
A) a layer of the atmosphere that is above the exosphere B) a layer of the atmosphere characterized by the presence of ozone C) a portion of the thermosphere in which the gas is ionized D) a portion of the troposphere in which ions are common
?Instructions: On occasion, the notation will be a shorthand notation for
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Exhibit 3-2
A child starts at one corner of a cubical jungle gym in a playground and climbs up to the diagonally opposite corner. The original corner is the coordinate origin, and the x, y and z axes are oriented along the jungle gym edges. The length of each side is 2 m.
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Use this exhibit to answer the following question(s).
Refer to Exhibit 3-2. What is the child's distance from her starting position?
A. 2.8 m
B. 3.5 m
C. 6.0 m
D. 6.9 m
E. 12.0 m